10th International symposium on Negative Ions, Beams and Sources - NIBS'26

Session

S3: Chairperson - Nikolai Lobanov, ANU

Sep 22, 2026, 1:50 PM

Conference Room (Prestige Lakeside Resort Nelson)

98. How Low Can we Go? Routine Reliability and Low Energy Limits for AMS with a Cs Sputter Source

Lauren Bezzina (ETH Zürich)

9/22/26, 1:50 PM

Invited

Accelerator mass spectrometry (AMS) is a highly sensitive technique for the detection of long-lived radionuclides and rare isotopes, with applications spanning archaeology, earth sciences, environmental studies, biomedicine, and nuclear science. AMS systems rely on the production of stable negative ion beams, most commonly using Cs sputter ion sources, followed by acceleration and molecular...

67. The Effects of Laser Irradiation and Source Parameters on the Cathode Temperature and Negative Ion Production in MC-SNICS ion source

Dr Mikko Laitinen (University of Jyväskylä)

9/22/26, 2:15 PM

Contributed Oral

The negative ion formation in caesium sputter ion sources occurs on the surface of a cathode covered by a thin caesium (Cs) layer that lowers the surface work function and enhances the negative ion yield. It has been demonstrated that laser irradiation of the cathode can significantly increase the extracted negative ion current. The laser enhancement often exhibits a transient nature...

77. Correlation Between Plasma Parameters and Beam Characteristics in a RF-driven negative hydrogen ion sources

Dr Na Wang (ASIPP.CAS)

9/22/26, 2:35 PM

Contributed Oral

In cesiated radio-frequency (RF)-driven negative ion sources, beam divergence and spatial uniformity are strongly influenced by plasma transport processes and cesium dynamics in the source region. Since beam quality is closely linked to plasma behavior near the plasma grid, understanding the coupling between source plasma properties and extracted beam characteristics is essential for...

104. Tracing Ultra-Low Level Environmental Processes using Negative Ion Beams of Rare Isotopes

Christopher Charles (TRIUMF)

9/22/26, 2:55 PM

Invited

Movements of nuclear contamination through the world's oceans, and natural radioactive decay in ancient deep-subsurface ground waters, can be traced by $^{127}$I/$^{129}$I and $^{236}$U/$^{238}$U isotopic composition (IC) measurements. Accelerator mass spectrometry (AMS) remains the technique of choice for such IC determinations at ultra-trace levels (i.e. $<$ 1$\times$10$^{-13}$), with a key...